Results 31 to 40 of about 280,153 (154)

Comportamento dos conversores comutados sob tensão nula com o indutor ressonante não linear

open access: yesEletrônica de Potência, 1996
A substituição do indutor ressonante linear por outro não linear, de maneira que o valor da indutância decresça com o aumento da corrente de carga, foi proposto para superar as dificuldades encontradas nos convemores comutados sob tensão nula Este ...
Ricardo Nederson do Prado
doaj   +1 more source

Os fatores explicativos da eficácia da análise da informação não financeira nos diferentes níveis de complexidade da tarefa

open access: yesInnovar: Revista de Ciencias Administrativas y Sociales, 2023
com o aumento da perceção de que a informação constante nos tradicionais relatos financeiros não satisfaz as necessidades dos stakeholders, tem-se verificado a generalização de relatos incidentes sobre a informação não financeira.
Fábio Albuquerque   +2 more
doaj   +1 more source

O MÉTODO DOS ELEMENTOS DE CONTORNO APLICADO À ANÁLISE NÃO-LINEAR DE PLACAS

open access: yes, 1998
Neste trabalho, desenvolve-se uma formulacao linear de placas atraves do Metodo dos Elementos de Contorno, baseada na teoria classica de Kirchhoff, onde a integracao numerica, sobre os elementos do contorno, e feita considerando-se a tecnica de ...
G. Fernandes
semanticscholar   +1 more source

Demographic buffering in natural populations: A multi‐level perspective

open access: yesJournal of Animal Ecology, Volume 95, Issue 8, Page 1298-1310, August 2026.
We introduce a multi‐level framework that unites stochastic elasticities with nonlinear selection to test demographic buffering. Applying it across mammals reveals a key insight: ecological robustness to variability often decouples from evolutionary constraint, reshaping how we understand resilience under environmental stochasticity.
Gabriel Silva Santos   +4 more
wiley   +1 more source

Comparison between simplified and FE models for short-term deflection in continuous RC beams

open access: yesRevista IBRACON de Estruturas e Materiais
In this work, a comparative study of different simplified methods and nonlinear finite element (FE) models used for calculating short-term deflections (vertical displacements of the longitudinal axis) in continuous reinforced concrete (RC) beams, under ...
E. JUNGES, H.L. LA ROVERE
doaj   +1 more source

A quantitative analysis to detect mass mortality events (wrecks) in Procellariiformes

open access: yesJournal of Applied Ecology, Volume 63, Issue 7, July 2026.
Our study provides the first systematic assessment of seabird mass mortality events in the South Atlantic and introduces a transferable statistical framework for detecting MMEs in other taxa and regions lacking baseline mortality information. By identifying recurrent temporal anomalies, high‐risk areas and vulnerable species, we could establish ...
Laura Baes   +3 more
wiley   +1 more source

Reinicialização De Controladores Repetitivos Em Inversores PWM Sob Distúrbios Não-Periódicos: Análise E Projeto

open access: yesEletrônica de Potência, 2010
Embora inversores PWM com controle repetitivo apresentem um excelente desempenho em regime permanente sob cargas não-lineares cíclicas, eles não apresentam uma boa resposta dinâmica sob distúrbios não-periódicos. Então, esse artigo apresenta a análise e
Cassiano Rech   +2 more
doaj   +1 more source

Is There Life After Death? The Role of Standing Dead Phorophytes in Supporting Tropical Epiphyte Diversity

open access: yesBiotropica, Volume 58, Issue 4, July 2026.
ABSTRACT Global increases in tree mortality from climate change and land‐use are altering forest structures, impacting canopy‐dwelling plants like vascular epiphytes, which depend on host trees (phorophytes). When a phorophyte dies standing, it becomes a snag, the local substrate conditions change and microclimatic exposure may increase, particularly ...
Camila Nardy Delgado   +3 more
wiley   +1 more source

Fine‐scale patterns of genetic structure in three species of forest birds reveal dynamic Pleistocene history within an Amazonian interfluve

open access: yesIbis, Volume 168, Issue 3, Page 972-984, July 2026.
Phylogeographical studies of Amazonian birds have revealed large intraspecific diversity, even within recognized areas of endemism. To understand the origin and organization of Amazonian diversity, including the influence of current and historical landscapes, we need to evaluate fine‐scale patterns of genetic diversity in relation to detailed ...
Affonso Henrique Nascimento de Souza   +4 more
wiley   +1 more source

Little devils of Neotropical forests: A first molecular phylogeny of stygnid harvestmen with UCE‐museomics and a gigamatrix approach (Arachnida, Opiliones, Stygnidae)

open access: yesSystematic Entomology, Volume 51, Issue 3, July‐September 2026.
First family‐wide phylogenomic framework of Stygnidae using UCE‐museomics and a gigamatrix approach establishes a novel three‐subfamily classification, erecting the new subfamily Auraninae subfam. nov. Signatures of severe incomplete lineage sorting and short deep internodes suggest a rapid early‐burst Neotropical radiation, driving phylogenetic ...
Dongyoung Kim   +2 more
wiley   +1 more source

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